Benchmarked strictly across TripTiming's 5 empirical pillars: Crowds, Weather, Vibes, Prices, and Safety.
Santorini emerges as the optimal September destination with an overall TripTiming Index of 69/100 vs 67/100 for Amalfi Coast (+2 point advantage). Santorini experiences more manageable visitor density and shorter landmark queues (carrying capacity score 51/100 vs 43/100 in Amalfi Coast).